Bungee Jumping#
Savannah decides to go bungee jumping. Starting atop a very high bridge, elastic cords are tied to their feet and they jump off the bridge. Once Savannah has fallen a certain distance, the force of the bungee cords slows their descent until they are at the lowest point.
Part 1#
If the system under consideration is: Savannah, the air, and the earth; discuss the work done by the bungee cord as Savannah descends. Assume the positive y direction is up.
Answer Section#
The tension points down, and Savannah moves down, so negative work is done.
The tension points up, and Savannah moves down, so positive work is done.
The tension point up, and Savannah moves up, so positive work is done.
The tension points up, and Savannah moves down, so negative work is done.
Attribution#
Problem is licensed under the CC-BY-NC-SA 4.0 license.